CVE-2015-8504 Denial of service in n/a

What is CVE-2015-8504?

CVE-2015-8504 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 11 Apr 2017. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Qemu, when built with VNC display driver support, allows remote attackers to cause a denial of service (arithmetic exception and application crash) via crafted SetPixelFormat messages from a client.

Weakness: CWE-369

Which versions are affected by CVE-2015-8504?

It affects 2 products.

Products include Debian Debian Linux, Qemu Qemu.

How do I fix CVE-2015-8504?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2015-8504 being exploited?

There is no known exploitation of CVE-2015-8504 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2015-8504, GHSA-g957-g6mh-xp98, UBUNTU-CVE-2015-8504.